Mitsubishi Electric MELSEC-F Series User Manual page 53

FX -1PG User's Manual
3U
3. Slope of the approximate S-shaped acceleration/deceleration
The following acceleration and deceleration are executed in the approximate S-shaped acceleration/
deceleration.
1) From the start of operation to 10% of the acceleration/deceleration time required to reach the operation
speed I
Acceleration/deceleration using the Sin curve.
2) From 10% to 90% of the acceleration/deceleration time required to reach the operation speed I
Linear acceleration/deceleration
The slope at this time is up to 1.2 times the slope of the trapezoidal acceleration/deceleration.
In order to set the same acceleration/deceleration as the trapezoidal acceleration/deceleration, it is
necessary to change the acceleration/deceleration time to 1.2 times the original value.
3) From 90% to the end of the acceleration/deceleration time required to reach the operation speed I
Acceleration/deceleration using the Sin curve.
Speed
1) 0 to 10%
Acceleration time required to
reach operation speed
Acceleration/deceleration time
*1. Acceleration time required to reach operation speed = Operation speed I ÷ Maximum speed ×
Acceleration/deceleration time
Caution when the approximate S-shaped acceleration/deceleration function is used
• The acceleration/deceleration time cannot be set individually. Acceleration/deceleration is executed at the
set value of the acceleration time.
• Set the acceleration/deceleration time within the range from 1 ms to 5000 ms.
• The operation speed change function and the target address change function cannot be used.
• If deceleration is executed before acceleration ends, the approximate S-shaped acceleration/deceleration
is executed at the deceleration start position. At this time, the times required for the acceleration and the
deceleration become same.
Speed
Time required for acceleration = Time required for deceleration
3) 90% to
100%
2)
Bias speed
*1
(Acceleration time)
Acceleration/deceleration time
(Acceleration time)
Maximum speed
Operation speed
Bias speed
6 Before Starting Positioning Operation
6.8 Approximate S-shaped Acceleration/Deceleration Function
Maximum speed
Approximate S-shaped
acceleration/deceleration
Operation speed
Trapezoidal
acceleration/deceleration
Time
Time
1
2
3
4
5
6
7
8
9
10
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